Heating-furnace



(No Model.) 4 Sheets-Sheet 1.

F. A. MAGEE &. S. VAN VORST. HEATING FURNACE.

No. 388,293. Patented Aug. 21, 1888.

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P. A. MAGEE & S. VAN VORST.

HEATING FURNACE.

Patented Aug. 21, 1888.

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(No Model.) 4 Sheets-Sheet 4.

F A. MAGEE & S. VAN VOR-S T.

HEATING FURNACE.

w 11 M m m m? M mV b g V 4 u M m} a m UNrTnn STATES PATENT @FFKQE.

FRANK A. MAGEE AND SYLVESTER VAN VORST, OF CHELSEA, ASSIGNORS TO THEMAGEE FURNACE COMPANY, OF BOSTON, MASSACHUSETTS.

HEATING-FURNACE.

SPECIFICATION forming part of Letters Patent No. 388,293, dated August21, 1888.

(No model.)

To all whom it may concern;

Be it known that we, FRANK A. Mxenn and SYLvEscrER VAN VoRs'r, both ofChelsea, in the county of Suffolk and State of Massachu- 5 setts,citizens of the United States, have invented a new and usefulImprovement in Heating-Furnaces, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, form- IQ ing a part of this specification, in explaining itsnature, wherein Figure 1 is a vertical central section of the furnacewith the exception of the top of the outer casing. Fig. 2 is a verticalsection upon :5 the line x of Fig. 1. Fig. 3 is a plan view of the base.Fig. 4. is a view of said base with its top plate removed. Fig. 5 is adetail view, in perspective, illustrating the entrance to the combustionchamber and the construction whereby air for consuming gases in thecombustion-chamber is provided. Fig. 6 is a detail View illustrating theclinker-passage from the front of the furnace to the grate. Fig. 7 is aplan View of a base-flue plate, hereinafter described.

The invention relates especially to the form and construction of thebase, to the arrangement and organization of the combustionchamber,downflues, base'flues, and uptlue or uptake, to a gas-burner arranged oneach side of the passage to the combustion-chamber, and to details ofconstruction which will hereinafter be enumerated.

In the drawings, A is the ash-pit; A, the fire-pot; A, thecombustion-chamber.

a is the entrance to the ash-pit; a, the anti clinker passage oropening; a, (see Fig. 1,) a passage to the combustionchamber A".

B is the grate.

B is the lining of the fire-pot.

b is the inner casing or shell of the furnace, and it includes thesection which is lined by the fire-brick and the upper section, whichforms, in connection with the top plate, I), the 5 combustion chamber.

C is the outer casing of the furnace. Between it and the inner casing orshell, I), is the airheating space 0. The base A has the deep section d,which forms a part of the ash-pit chamber, and the side and rearextension, D,

which forms the semicircular fine d, extending on each side and the backof the base. The vertical wall (Z of the base, its extension, and thebottom plate, d", of the base are made integral or in one casting, andthe flue d is formed by the flueplate d, which is shaped as representedin Fig. 7 and extends from the corner edge, d, of the extension to thetop plate, (1, of the base. There is formed on each side of the shellI), near its top, an opening, 6. 66 to the combustioil-chamber, (seeFigs. 1 and 2,) and there is bolted to the casing Z) the boxes orsections 6, each of which surrounds its respective opening 6, has thepassage 6, and is adapted to receive and hold the upper 6 end of a pipe,6*. (See Fig. 2.)

The boxes or projections e and pipes c are in the heatingchaniber 0, andthe lower ends of the pipes 6 close upon the upper base-plate, d, andsurround the openings 6* therein. (See Fig. 2.) These openings connectthe passages in the pipes c with the base-flue (1, near the front endsthereof and upon each side of the base. There also extends from theplate d the pipe 6 (See Fig. 1.), This pipe is also in 75 theheating-chamber a and at the rear of the inner casing, 12. It surroundsthe opening e in the base-plate d", and is secured at its upper end tothe horizontally-extending pipe 6, which forms the direct escape-passagee from s the combustion-chamber. The passage 6" in the pipe opens intosaid passage e The opening to the direct escape-passage e is controlledby a damper or valve, f, which is pivoted atf, so that its upper partswings outwardly and its lower part inwardly, and it is operated fromthe front of the stove by means of a rod, f, which connects with thelever f, attached to the damper spindle or pivot, and the damper-rod fhas a shonl- 0 der, f, which is adapted to bear against the innersurface of the casing C, in close proximity to the slotf, when it isdesired to hold the damper f closed; but it may be released therefrom bylifting the rod so as to draw it 5 outward through the slot.

There is formed upon each side of the passage a to thecolnbustion-chaniber a narrow chamber, 9, (see Fig. 5,) between theplates g g. The plate forms the side walls of the passage to thecombustion chamber and is provided with perforations 9 which are eitherformed directly therein or in a plate attached thereto; and thechambersg have inlets or connections g with theouter air through theeasingg (see Fig. 5,) outside the line of the door, so that air for theconsumption of gases shall be supplied to the combustion-chamber inproper form through the inlet and the perforations or holes in theplates 9.

By making the side wall and bottom of the base and its extension in onecasting we are enabled to form the flue d by the flueplate d*, and thisbrings thejoints between the flueplate d, the outer wall of the base,and with the top plate of the base between the flue (1' and the ash-pit,so that any escape of gas from said flue d would be into the ash-pit,instead of into the air-heating chamber. This result is obtained bymaking the side wall of the base and the extension and the bottomthereof of one casting, or integral. We also use a gascheck at the upperends of the pipes e 6 which we term self-filling checks.

The construction employed in connection withthe pipes e comprises aring, h, having the contracted section h. This ring is of a size totightly fit the interior of the pipe e,and the contracted portion, inconnection with the upper end of the pipe, forms a pocket or recess, hwhich receives a downward extending flange, h, from the box orprojection e. The box or projection also has a recess, h which receivesthe upper end of the pipe. The cup or packing-recess h is so locatedthat it is always kept filled with s'oot and dust, so that it makesthejoint in effect self-packing.

The pins h may be arranged in the pipe 6*, upon which the ring h mayrest. The construction of the gas-check for each of the pipes e is thesame. The connection between the lower ends of the pipes e and thebase-plate d is of the ordinary form. The gas-check for the upper end ofthe pipes c varies from those used in connection with the pipes e inthat the packing-ring m is arranged to fit the exterior of the pipe 6and it has an outward-extending section, m',which forms, with the outersurface of the upper end of the pipe e ,a pocket or recess, m whichreceives a flange, m, extending from the pipe 0 The gas-check ring isplaced upon the outside of the pipe e because this pipe should havesubstantially the capacity of two pipes, e, and the greatest capacity ofthese two pipes is that of their smallest diameter, which is thediameter of the gas-check rings h, and by placing the gas-check ringupon the exterior of the pipe e while the pipe is of the same size asthe pipe e, not having a gas-check upon the inside to decrease itsdiameter, it has practically a capacity sufficient to include both pipese In Fig. 6 We have shown the door N to the anti-clinker passage a,connected by means of we claim and desire to secure by Letters Patent ofthe United States 1. In a furnace, the combination of the outer shell orcasing. O, the inner shell, I), the air-heating chamber 0 between thetwo shells, the fire-pot A, and combustion-chamber A, inclosed by theinner shell, I), a top plate, b, the base having the deep section d andthe semicircular extension D for the flue d, the said flue, theflue-plate d, the openings 6 through the side of the shell 12, theconnections 6, the pipes 6 the plate d, having the openings 6 e, thepipe e", the direct escapepipe 0, and the damper a, substantially as described.

2. In a hotair furnace, the combination, with the combustion-chamber andfire-potsection of the furnace, of a base-section which is provided witha central depressed ash-pit portion and an outwardly and upwardlyflaring substantially semicircular portion, d formed together in asingle casting, and which is provided, also, with vertical curved plate(1", extending from the upper extremity of the depressed portion to theupper extremity of such base-section and separating the ash-pit portionfrom the baseline portion ofsuch base-section, substantially asdescribed.

3. In a hot-air furnace, the combination, in the base-section thereof,of the one-part lower portion, having the central depression providedwith the bottom plate, d, and having also the outwardly and upwardlyflaring portion or prolongation (P, the covering-plate d provided withthe openings 6 e at the sides, and with the rear opening, 6 and theintermediate imperforate plate, d, extending from the top of thecentraldepression to the bottom of the covering-plate d, and separatingthe ash-pit chamber from the semicircular base-flue, substantially asdescribed.

4. The combination of the combustion-chamber, formed with entrance at,the plates 9, forming the vertical .walls to the passage 0t and havingperforations 9 the chambers g,

tion or contraction, h, forming, in connection with the inner face ofthe pipe, the recess 0r pocket ha, and the box or section 6, having atits lower extremity an inner and an outer depending flange, the outerflange embracing the exterior surface of the pipe 6", and the innerflange extending into the recess or pocket If, between the body of thepipe and the upper extremity or contraction, h, of the ring h,substantially as and for the purposes specified.

FRANK A. MAGEE. SYLVESTER VAN VORST. Witnesses:

F. F. RAYMOND, 2d, FRED. B. DOLAN.

